Plants of this kind are collectively referred to as 'cacti'.

It is said that secondhand smoke has a negative impact on health.

My younger brother goes to a school for special needs.

Homo erectus played a significant role in the process of human evolution.

Protectionist policies are introduced to protect domestic industries from foreign competition.

My younger brother attends a class for special needs.

She is maintaining an average grade.

He is as tenacious as Shitsu, and once he decides something, he rarely changes it.

He saw the character '憂', and remembered his deceased friend.

His face was filled with distress.